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Cornerstone · Grades 3–5 Keystones #1 19 July 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 19 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 1⁄5

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 14 = 23

    Answer: x = 3
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 2:1

    Answer: 16 and 8
  5. 5. Statistics Mean

    Calculate the mean of: 32, 17, 11, 45, 16, 15. Give your answer to 2 decimal places

    Answer: 22.67

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